816961242024 has 48 divisors (see below), whose sum is σ = 2213291776020. Its totient is φ = 272235686400.

The previous prime is 816961242007. The next prime is 816961242049. The reversal of 816961242024 is 420242169618.

It is a happy number.

816961242024 is a `hidden beast` number, since 8 + 1 + 6 + 9 + 612 + 4 + 2 + 0 + 24 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 717717341124 + 99243900900 = 847182^2 + 315030^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1531927 + ... + 1995174.

Almost surely, 2^816961242024 is an apocalyptic number.

It is an amenable number.

816961242024 is an abundant number, since it is smaller than the sum of its proper divisors (1396330533996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816961242024 is a wasteful number, since it uses less digits than its factorization.

816961242024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530330 (or 3530323 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 816961242024 in words is "eight hundred sixteen billion, nine hundred sixty-one million, two hundred forty-two thousand, twenty-four".